Method for monitoring impact damage of composite material structure

A composite material and structural impact technology, which is used in the monitoring of composite material structural impact damage, and the real-time measurement and evaluation of composite material structural damage, achieving the effect of wide application, promoting development, and improving the degree of intelligence.

Active Publication Date: 2021-05-07
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Gravel impact, hail, tool impact, etc. are common impact conditions. At present, there are few online monitoring methods for impact damage of composite structures.

Method used

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  • Method for monitoring impact damage of composite material structure
  • Method for monitoring impact damage of composite material structure
  • Method for monitoring impact damage of composite material structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] Below in conjunction with accompanying drawing, the embodiment of the present invention is described in further detail:

[0032] as attached figure 1 As shown, the parts and systems involved in a monitoring method for impact damage of a composite material structure in the present invention include: a composite material structure 1, an impact object 2, a camera 3, an impact object identification and positioning module 4, a light source control system 5, an ultraviolet light Launcher 6, damage area 7, impact damage identification system 8, damage assessment and early warning system 9.

[0033] as attached figure 2 Shown, the present invention a kind of monitoring method of impact damage of composite material structure, comprises the following steps:

[0034] Step S1, use a steel hammer with a diameter of 12.7mm to conduct impact tests and simulations of different energies on multiple composite structural parts, obtain the relationship between impact energy, impact pit ...

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PUM

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Abstract

Due to excellent performance, the composite material is widely applied to the fields of aviation, high-speed rails, ships, automobiles, wind power and the like, the bearing performance of a composite material structure can be greatly reduced through impact, and impact damage is one of main threats to service safety of the composite material structure. The invention relates to a method for monitoring impact damage of a composite material structure, which can realize the functions of impact object identification, impact energy estimation, impact damage positioning, impact damage degree evaluation, danger early warning and the like on the basis of damage mechanics, impact dynamics and image identification technologies of the composite material structure, and is low in cost, and wide in application range. According to the invention, the safety and reliability of the composite material structure in the service process can be improved, online collection and network connection summarization of damage information in the equipment service process can be achieved, data support is provided for optimization design of the composite material structure, and engineering application of the composite material structure and development of equipment intelligence are promoted.

Description

technical field [0001] The invention relates to real-time measurement and evaluation of composite material structure damage, in particular to a monitoring method for composite material structure impact damage, belonging to the technical fields of new materials and intelligent manufacturing. Background technique [0002] Composite materials have the advantages of low density, high specific strength and specific modulus, strong designability, good damping characteristics, good fatigue performance, and corrosion resistance. They are more and more used in aviation, high-speed rail, ships, automobiles, wind power and other fields. Widely, there are more and more composite material structures in aircraft, trains, ships, automobiles and other equipment. How to ensure the service safety of these composite material structures is an engineering problem that needs to be solved urgently. Studies at home and abroad have shown that impact can greatly reduce the load-bearing performance of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/30G01N3/06G01M7/08G06T7/00
CPCG01M7/08G01N3/068G01N3/30G01N2203/0019G01N2203/0039G01N2203/0075G01N2203/0647G01N2203/0682G06T7/0002G06T2207/10004G06T2207/20024G06T2207/20192G06T2207/30108
Inventor 李立军
Owner BEIHANG UNIV
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